95-475 M. Daumer, D. D\"urr, S. Goldstein, N. Zanghi

On the Flux-Across-Surfaces Theorem (173K, Postscript) Nov 9, 95

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Abstract. The quantum probability flux of a particle integrated over time and a distant surface gives the probability for the particle crossing that surface at some time. We prove the free Flux-Across-Surfaces Theorem, which was conjectured by Combes, Newton and Shtokhamer, and which relates the integrated quantum flux to the usual quantum mechanical formula for the cross section. The integrated quantum flux is equal to the probability of outward crossings of surfaces by Bohmian trajectories in the scattering regime.

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